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Showing results for tags 'bivalve'.
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To preface, I know nothing about fossils or paleontology (hence username). I just stumbled upon this yesterday and thought it was cool. I was wondering if there is any way to tell how old it is and generally how rare or common this type of find is. Location is coastal South Carolina Lowcountry. I found it on an island that is part of a public wildlife refuge. You can access a beach on the island. The forested land drops down about 4-6 feet to the sandy beach. I saw the sheer cliff face and thought "I'd bet you could find some fossils in there" and sure enough I saw this sticking out of the dirt/clay so I dug it out. I am assuming it is very old because it is much larger than any other seashell I've seen on that beach and it has a different ribbed texture. Also I found it far away and higher up from the current high tide line in the dirt (not sand), so it must be from an era where the sea levels were much higher. It measures 4"x3.75"x1.25". I'm also wondering what the best way to clean this is? Thanks, and let me know if there is any more information I should provide.
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From the album: Miocene, Maryland and Virginia, USA
Calvert formation. Scale in cm. Calvert co. Maryland. -
From the album: Miocene, Maryland and Virginia, USA
Calvert formation Calvert co. Maryland. -
Found this specimen when hunting just outside Danville, PA in a roadcut near the Susquehanna river. This is from the same visit as my previous post. The location is Trimmers Rock formation. My best guess is Leiorhynchus but I'm pretty stumped on this one.
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Found these specimens when hunting just outside Danville, PA in a roadcut near the Susquehanna river. The location is Trimmers Rock formation. I'm fairly certain that these are brachiopods but I haven't been able to ID them with any certainty. Mainly at that site we find beautiful Mucrospirifer specimens. However, these specimens appear larger and don't, to me, seem to be Mucrospifier. Most of the research I've done has yielded IDs that seem to be typically smaller than what I found. The first image shows the two parts together, the second shows them side by side with the top piece flipped over, the third shows the bottom piece and the fourth shows the top piece. My best guess is Leiorhynchus.
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The Devonian period is known as "The Age of Fish", but could also be known as "The Age of Brachiopods." In the Early / Lower Devonian, brachiopods reached the height of their diversity towards its end in the Emsian. We see the ancestral groups occurring, lingulids, craniids, orthids, protorthids, pentamerids, rhynchonellids and strophomenids, as well as the later successful groups we have seen before such as atrypids, athyrids and orthotetids, plus the rise of spiriferids, spiriferinids and productids and the beginning of the terebratulids. By the end of the Devonian , several of these groups are extinct or severely reduced in importance and brachiopods never quite recover. Also, the Devonian is the last time we see trilobites with such variation, large sizes and numbers and orthocerids too are much more uncommon after the rise of the goniatites. The massive tabulate coral reefs also disappear after the Devonian. Fascinating period and I hope to share some of its wonders with you. Equally, a lot of this is rather new to me, so I would be very grateful for any assistance, corrections or further information on my specimens. Thank you. The Early Devonian epoch is split into three stages, so let's start with the first of those, the Lochkovian, that began about 419 mya and finished roughly 411 mya. I have been sent a nice selection of brachiopods from the Kalkberg Formation, Helderberg Group by the Mighty @Misha, mostly. But the kind gentleperson also sent me this fascinating little bryozoan hash : It is dominated by fenestellids, which is usually the case in the Devonian, but other orders sill occur. These ones, I think, are Fenestella, but there are so many species in the formation that I wont take a guess as to species : Not sure what this one is ;
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- aguion formation
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Is this a Bivalve or brachiopod? Seller lists it as both. Found near Somis California, no other information given
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From the album: Lower Carboniferous fossils of Ireland
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From the album: Fossil Collection: DC Area and Beyond
Isognomon maxillata Matoaka Beach Cabins, MD Choptank and St. Mary's Formations Miocene -
From the album: Fossil Collection: DC Area and Beyond
Marvacrassatella turgidula Matoaka Beach Cabins, MD Choptank and St. Mary's Formations Miocene -
From the album: Fossil Collection: DC Area and Beyond
Dallarca sp. Matoaka Beach Cabins, MD Choptank and St. Mary's Formations Miocene -
From the album: Fossil Collection: DC Area and Beyond
Mercenaria cuneata Matoaka Beach Cabins, MD Choptank and St. Mary's Formations Miocene -
From the album: Fossil Collection: DC Area and Beyond
Dosinia acetabulum Matoaka Beach Cabins, MD Choptank and St. Mary's Formations Miocene -
From the album: Fossil Collection: DC Area and Beyond
Chesacardium sp. Matoaka Beach Cabins, MD Choptank and St. Mary's Formations Miocene -
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I bought this shell fossil in a small local street stall selling artifacts in Lima, Peru. It was surely found in Peru. I'm afraid the seller (and therefore I) don't know anything more about it. Presumably its a bivalve with distinctive pimples along its ribbing. Any chance someone can identify it?
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From the album: Middle eocene fossils from Qatar
A nice example of a Vulsella bivalve that can be found in the dukhan alveolina limestone formation in Qatar. Lutetian age. ~45 million years old
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